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/**
* @file
*
* @section DESCRIPTION
*
* These functions provide a portable implementation of the common (but not
* yet universal) asprintf & vasprintf routines to allocate a buffer big
* enough to sprintf the arguments to. The XNF variants terminate the server
* if the allocation fails.
*/
/*
* Copyright (c) 2004 Alexander Gottwald
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name(s) of the above copyright
* holders shall not be used in advertising or otherwise to promote the sale,
* use or other dealings in this Software without prior written authorization.
*/
/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <X11/Xos.h>
#include "os.h"
#include <stdarg.h>
#include <stdio.h>
#ifdef asprintf
# undef asprintf
#endif
#ifdef vasprintf
# undef vasprintf
#endif
#ifndef va_copy
# ifdef __va_copy
# define va_copy __va_copy
# else
# ifndef _MSC_VER
# error "no working va_copy was found"
# endif
# endif
#endif
/**
* Varargs sprintf that allocates a string buffer the right size for
* the pattern & data provided and prints the requested data to it.
*
* @param ret Pointer to which the newly allocated buffer is written
* (contents undefined on error)
* @param format printf style format string
* @param va variable argument list
* @return size of allocated buffer, or -1 on error.
*/
int
Xvasprintf(char **ret, const char * _X_RESTRICT_KYWD format, va_list va)
{
#ifdef HAVE_VASPRINTF
return vasprintf(ret, format, va);
#else
int size;
#ifdef _MSC_VER
size = vsnprintf(NULL, 0, format, va);
#else
va_list va2;
va_copy(va2, va);
size = vsnprintf(NULL, 0, format, va2);
va_end(va2);
#endif
*ret = malloc(size + 1);
if (*ret == NULL)
return -1;
vsnprintf(*ret, size + 1, format, va);
(*ret)[size] = 0;
return size;
#endif
}
#ifndef HAVE_VASPRINTF
# define vasprintf Xvasprintf
#endif
/**
* sprintf that allocates a string buffer the right size for
* the pattern & data provided and prints the requested data to it.
*
* @param ret Pointer to which the newly allocated buffer is written
* (contents undefined on error)
* @param format printf style format string
* @param ... arguments for specified format
* @return size of allocated buffer, or -1 on error.
*/
int
Xasprintf(char ** ret, const char * _X_RESTRICT_KYWD format, ...)
{
int size;
va_list va;
va_start(va, format);
size = vasprintf(ret, format, va);
va_end(va);
return size;
}
/**
* Varargs sprintf that allocates a string buffer the right size for
* the pattern & data provided and prints the requested data to it.
* On failure, issues a FatalError message and aborts the server.
*
* @param ret Pointer to which the newly allocated buffer is written
* (contents undefined on error)
* @param format printf style format string
* @param va variable argument list
* @return size of allocated buffer
*/
int
XNFvasprintf(char **ret, const char * _X_RESTRICT_KYWD format, va_list va)
{
int size = vasprintf(ret, format, va);
if ((size == -1) || (*ret == NULL)) {
Error("XNFvasprintf");
FatalError("XNFvasprintf failed");
}
return size;
}
/**
* sprintf that allocates a string buffer the right size for
* the pattern & data provided and prints the requested data to it.
* On failure, issues a FatalError message and aborts the server.
*
* @param ret Pointer to which the newly allocated buffer is written
* (contents undefined on error)
* @param format printf style format string
* @param ... arguments for specified format
* @return size of allocated buffer
*/
int
XNFasprintf(char ** ret, const char * _X_RESTRICT_KYWD format, ...)
{
int size;
va_list va;
va_start(va, format);
size = XNFvasprintf(ret, format, va);
va_end(va);
return size;
}
/* Old api, now deprecated, may be removed in the future */
char *
Xvprintf(const char *format, va_list va)
{
char *ret;
if (vasprintf(&ret, format, va) == -1)
ret = NULL;
return ret;
}
char *Xprintf(const char *format, ...)
{
char *ret;
va_list va;
va_start(va, format);
if (vasprintf(&ret, format, va) == -1)
ret = NULL;
va_end(va);
return ret;
}
char *
XNFvprintf(const char *format, va_list va)
{
char *ret;
XNFvasprintf(&ret, format, va);
return ret;
}
char *XNFprintf(const char *format, ...)
{
char *ret;
va_list va;
va_start(va, format);
XNFvasprintf(&ret, format, va);
va_end(va);
return ret;
}
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